/*  rays2 - Draw seismic rays using grace
 *  Copyright (C) 2002-2009 Ricardo Biloti <biloti@ime.unicamp.br>
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

int spline(int *n, float *x, float *y, float *b,
	   float *c, float *d);

double seval(int *n, float *u, float *x, float *y,
	     float *b, float *c, float *d);

int sgheval(int *n, float *u, float *x, float *y,
            float *b, float *c, float *d,
	    float *s, float *g, float *h);
